PCMGMatResidualDefault#
Default routine to calculate the residual.
Synopsis#
#include "petscksp.h"
PetscErrorCode PCMGMatResidualDefault(Mat mat, Mat b, Mat x, Mat r)
Collective
Input Parameters#
mat - the matrix
b - the right-hand-side
x - the approximate solution
Output Parameter#
r - location to store the residual
See Also#
KSP: Linear System Solvers, PCMG, PCMGSetMatResidual(), PCMGResidualDefault()
Level#
developer
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages